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Marketable Investment Securities (Tables) | 6 Months Ended
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Dec. 31, 2014
Schedule of Fair Value for Available-for-Sale Securities by Major Security Type and Class of Security | The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at December 31, 2014 and June 30, 2014 were as follows:
(In thousands) |  | Amortized cost |  |  | Gross unrealized holding gains |  |  | Gross unrealized holding losses |  |  | Estimated fair value |
At December 31, 2014: |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 57,010 |  |  | $ | — |  |  | $ | — |  |  | $ | 57,010 |
Cash equivalents |  |  | 2,699 |  |  |  | — |  |  |  | — |  |  |  | 2,699 |
Restricted cash |  |  | 22,138 |  |  |  | — |  |  |  | — |  |  |  | 22,138 |
Total cash, cash equivalents and restricted cash |  |  | 81,847 |  |  |  | — |  |  |  | — |  |  |  | 81,847 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds and notes |  |  | 45,181 |  |  |  | 5 |  |  |  | (18 | ) |  |  | 45,168 |
Municipal bonds |  |  | 83,506 |  |  |  | 141 |  |  |  | (40 | ) |  |  | 83,607 |
Federal agency issues |  |  | 18,933 |  |  |  | 2 |  |  |  | (4 | ) |  |  | 18,931 |
Total available-for-sale securities |  |  | 147,620 |  |  |  | 148 |  |  |  | (62 | ) |  |  | 147,706 |
Total cash, cash equivalents, restricted cash and available-for-sale securities |  | $ | 229,467 |  |  | $ | 148 |  |  | $ | (62 | ) |  | $ | 229,553 |
(In thousands) |  | Amortized cost |  |  | Gross unrealized holding gains |  |  | Gross unrealized holding losses |  |  | Estimated fair value |
At June 30, 2014: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | 45,181 |  |  | $ | — |  |  | $ | — |  |  | $ | 45,181 |
Cash equivalents |  |  | 19,639 |  |  |  | 1 |  |  |  | — |  |  |  | 19,640 |
Total cash and cash equivalents |  |  | 64,820 |  |  |  | 1 |  |  |  | — |  |  |  | 64,821 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds and notes |  |  | 44,449 |  |  |  | 36 |  |  |  | (11 | ) |  |  | 44,474 |
Municipal bonds |  |  | 137,821 |  |  |  | 334 |  |  |  | (3 | ) |  |  | 138,152 |
Federal agency issues |  |  | 23,134 |  |  |  | 12 |  |  |  | (7 | ) |  |  | 23,139 |
Total available-for-sale securities |  |  | 205,404 |  |  |  | 382 |  |  |  | (21 | ) |  |  | 205,765 |
Total cash, cash equivalents and available-for-sale securities |  | $ | 270,224 |  |  | $ | 383 |  |  | $ | (21 | ) |  | $ | 270,586 |
Schedule of Maturities of Debt Securities Classified as Cash Equivalents and Available-For-Sale | Cash, cash equivalents, restricted cash, and maturities of debt securities classified as available-for-sale securities are as follows at December 31, 2014:
(In thousands) |  | Amortized cost |  |  | Estimated fair value |
Cash |  | $ | 57,010 |  |  | $ | 57,010 |
Cash equivalents |  |  | 2,699 |  |  |  | 2,699 |
Restricted cash |  |  | 22,138 |  |  |  | 22,138 |
Available-for-sale: |  |  |  |  |  |  |  |
Due within one year |  |  | 105,370 |  |  |  | 105,406 |
Due after one year through five years |  |  | 42,250 |  |  |  | 42,300 |
Due after five years |  |  | — |  |  |  | — |
|  | $ | 229,467 |  |  | $ | 229,553 |

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